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A study reveals that astronauts experience dramatic bone mass loss while in orbit.


Before entering space, astronauts must undertake extensive training, but no amount of training can prepare them for the physical toll that the entire experience has on their health. Researchers have discovered that astronauts lose a significant amount of bone mass while in space, and it takes them more than a year to regain it after returning from their missions.

Additionally, Dr. Steven Boyd of the University of Calgary in Canada, who is also the head of the McCaig Institute for Bone and Joint Health, cautioned that due to the duration of future trips to Mars, the pace of bone mass loss may provide a challenge.

“Will it get worse with time, or won’t it? We don’t know,”

After some time, it’s possible that we reach a constant condition, or it’s also possible that we keep losing bone. However, I doubt we would keep losing it until there was nothing left, Boyd told The Guardian.

According to a study that examined the wrists and ankles of astronauts during and after their time on the International Space Station (ISS), they lost about 1% to 2% of their bone density per month.

That almost equals the amount of bone density that people lose over the course of approximately a decade.

Boyd said that the more time spent in space, the more bone is lost.

The chief of medical research at France’s CNES space agency, Guillemette Gauquelin-Koch, cited the loss of bone density as being caused by the weightlessness of spaceflight.

“Even with two hours of exercise a day, it feels like you spend the other 22 hours in bed. When they get there, the team will find it incredibly difficult to walk on Martian dirt.

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